Quran 3:141 from Surah Aal-i-Imraan on Divine Marvels.
وَلِيُمَحِّصَ ٱللَّهُ ٱلَّذِينَ ءَامَنُواْ وَيَمۡحَقَ ٱلۡكَٰفِرِينَ
English translation: And so that may purify Allah those who believe and destroy the disbelievers
Transliteration: waliyumahhisa al-lahu alladhina amanu wayamhaqa al-kafirina